Finding the Fourth Proportional to 1,550.50, 2,326.42 and 728.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.50 : 2,326.42 = 728.70 : x
2. Step 2: Convert to fraction form
   1,550.50/2,326.42 = 728.70/x
3. Step 3: Cross multiply
   1,550.50x = 2,326.42 × 728.70
4. Step 4: Simplify right side
   1,550.50x = 1,695,262.25
5. Step 5: Solve for x
   x = 1,695,262.25/1,550.50
6. Step 6: Final answer
   x = 1,093.36